Dead Printer Service Check - Lexmark X543 Series Service Manual

Dead printer service check

A dead printer is a condition where the display is blank, the LED on the operator panel is off, the fan does not
turn, no motors turn, and the fuser does not heat.
If a 650-sheet Duo Drawer is installed, remove the option and check the base printer for correct operation. If the
base printer operates correctly, replace the 650-sheet Duo Drawer.
Warning: Observe all necessary ESD precautions when removing and handling the controller board or any
installed option cards or assemblies. See
CAUTION
When you see this symbol, there is a danger from hazardous voltage in the area of the product
where you are working. Unplug the product before you begin, or use caution if the product
must receive power in order to perform the task.
Remove any input paper handling options from the printer.
Step Questions / actions
1 Check the AC line voltage.
Is the line voltage correct?
2
Is the AC line cord damaged?
3 Is the JLVPS1 cable correctly connected at
JLVPS1 on the controller board?
4
Turn the printer off, and then on.
Does the problem persist?
5 Warning: Damage to the printer is possible.
Be careful to touch only one conductor at a
time. Rest the probe against the connector to
steady it.
With the printer on.verify the following values at
JLVPS1:
JLVPS1 (exposed conductors)
Pin Value
1 +5 V dc
3 +5 V dc
5 +5 V dc
Are the values approximately correct?
Go to step 2.
Replace the line cord.
Go to step 5.
Go to step 5.
Replace the controller
board. See
board removal" on
page
Pin Value
7 +24 V dc
9 +24 V dc
11 +24 V dc
"Handling ESD-sensitive parts" on page
Yes
"Controller
4-16.
7525-xxx
4-1.
No
Inform the customer.
Go to step 3.
Reconnect the JLVPS1
cable, and go to step 4.
Problem resolved.
Replace the LVPS.
See"Low-voltage power
supply (LVPS) assembly"
on page 4-31.
2-37
Diagnostic information